1. IF the Land is a agricultural land THEN it cannot be registered due to technical issues and probably you might not be a agriculturist, which is mandatory for agricultural land.
2. You can file a Police FIR, requesting investigation and charge-sheet, for offences like cheating, intimidation, fraud against the person, supported with all relevant supporting documents.
3. IF the Police does not take action, THEN you can file private criminal case u/s 156(3) Cr.P.C., in the local Magistrates court, seeking directions to the Police to investigate and file charge sheet. The said Person may come down for settlement.
4. Depending on available documentations, you also have an option of file a grievance petition before the Local Consumer Court and claim damages & compensation, for the harassment and negligence of the developer.
Keep Smiling .... Hemant Agarwal